Partial Fractions: Refresh Memory on Integral of x/(1+x^2)

[dlevanchuk]

Homework Statement

Need to refresh my memory :-S

Indefinite integral of x/(1+x^2) ..

Homework Equations

The Attempt at a Solution

Would I use partial fractions on that bad boy?

 

[dlevanchuk]

nevermind... substitution of u = 1+x^2 is easier.. :-)

 

[Mark44]

Partial fractions is not a viable candidate for this problem, since 1 + x² is irreducible in polynomials with real coefficients.